Soft freezing is Haier's patent. The soft freezing function of the refrigerator is to turn the middle door into a soft freezing temperature zone of 7 degrees Celsius, so that the food is in a soft freezing state, ensuring that the nutrition of the food will not be lost, and it will not be frozen after the user takes out the food and before cooking. The storage time of food in soft frozen area is relatively short, and its temperature is usually between zero and zero seven degrees, which is not conducive to the long-term preservation of food.